ASTROSAT CZTI

Data Quality Report

Orbit 54983

Creation date: 2025-11-27T12:20:42.130880
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_014T01_9000006528_54983cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54983cztM0_level2_quad_clean.evt
Size (bytes)600,992,64064,440,000
Size573.2 MB 61.5 MB
Events in quadrant A3,898,049453,805
Events in quadrant B2,611,117548,834
Events in quadrant C2,757,661490,895
Events in quadrant D12,558,60378,500

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172521713
B0135431820
C013105931
D0463695437

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01228
B012214
C01228
D012210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A546268012.449652%
B54681743.182151%
C54721342.448830%
D5232441284.327217%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7289 5583 412 412 5.65% 7.38%
B 7086 5593 23 23 0.32% 0.41%
C 7291 5613 22 22 0.30% 0.39%
D 6861 5274 4239 4239 61.78% 80.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 32 1418493 10150.98 563 549 139.7
A 0 8 242365 1731.15 563 549 139.7
A 4 3 20864 145.43 563 549 139.7
B 9 251 55291 420.78 598 576 130.0
B 10 245 43615 330.98 598 576 130.0
B 0 182 38614 292.52 598 576 130.0
C 4 5 136574 835.1 594 590 162.8
C 6 223 131200 802.1 594 590 162.8
C 1 16 43213 261.75 594 590 162.8
D 15 94 10943381 145522.82 261 249 75.2
D 15 46 167392 2222.68 261 249 75.2
D 2 249 128733 1708.59 261 249 75.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter